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Finding the Fourth Proportional to 573,446.12, 791,310.82 and 318,781.80

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Solution

The fourth proportional to 573,446.12, 791,310.82 and 318,781.80 is: 439,893.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,446.12 : 791,310.82 = 318,781.80 : x
  2. Step 2: Convert to fraction form
    573,446.12/791,310.82 = 318,781.80/x
  3. Step 3: Cross multiply
    573,446.12x = 791,310.82 × 318,781.80
  4. Step 4: Simplify right side
    573,446.12x = 252,255,487,559.08
  5. Step 5: Solve for x
    x = 252,255,487,559.08/573,446.12
  6. Step 6: Final answer
    x = 439,893.97

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.